Heat regenerator



April 18, 1933. w. J. lRWlN HEA T REGENERATOR 2 Sheets-Sheet 2 Filed July 6, 1932 1730970507".- W/LLMM J /EW/N,

Patented Apr. 18, 1933 PATENT 'OFFICE i WILLIAMZ IRWIN, OF WILKINSBURG, PENNSYLVANIA HEAT BEGENEBATR Application filed July 6, 1932] Serial No. 621,118.

This nvention relates to regenerative furnaces and particularly to 'the regenerator units thereof.` In these the gas flow is generally greater through one part of their checker works than another and this results in undesirable hot and cold spots.

The object of 'the present inventor isto obtain a more even gas flow through regenerator units; Other objects may be inferred from the following discloslure of various specific forms of the invention as applied to an open hearth s checkerwork. e

Having reference to the accompanying drawings: I

Figure 1 is a horizontal cross-section from the broken line I--I in Figure 4 showing gas and air regenerators.

Figure 2 is a cross-section from the line 26 II-II n Fgure 1.

Figure 3 is a cross-section from the line III-III in Figure 1.' g

Figure 4 is a vertical cross-section from the line IV-IV in Figure 1, and Figure 5 is a cross-section similar to the one shown in Figure 4 but showing a modification of the invention.

The above show a brick or tile checkerwork 1 having an upper chamber 2 and a lower chamber 3. A gaseous flow is introduced to the upper chamber from thefurnacs combustion chamber by an uptake 4 and slag pockets 5, and to the lower chamber by a flue 6 communicatng with either a stack, gas or air main. These arrangements depend upon the furnaces heating cycle an whether the particular unit described is pre heating fuel, gas or air. Although the usual brick checkerwork is indicated, it is to *be understood thatthe invention is applicable to any form of heat absorption unit. e

Now the uneven flow through the Checker- Work 1 mentioned in the forepart of the specification results from the velocity of the gaseous flow introduced to the chambers 2 or 3, which carries it to their ends and there forces V it upwardly or downwardly. Thus, the most cooled part receives the least heat and the most heated part receives the least of the cold ases.

of 'the sides or baflles 7 The present invention avoids this linde sirable efl'ect by the use of gaseousflow ob structions 7 in the roof of the' top chamber r and the bottom of the bottom chamber. These obstructions here consist simply of a step in the entrance sides of the center of the Checkerwork 1. When the gaseous flow strikes these 'obstructions it is forced to the points usually Heglected, Itsvelocity still tends to Carry it to the end of the chambers 2 and 3 and this prevents too great a concentration. of the deflected gases. The chambers' may in eline toward the checkerwork '1 beyond each A modification of this Construction may consist in making a plurality of steps or obstructions 7 and 7 which effect the' desired end, this being shown by Figure 5. i

It might be mentioned that both the above constructions depend upon another factor than that of the simple upward ordown wardgas turbulencies which might be .expected, that is, the redu'ction in area of the chambers 2 and 3 towards their ends causes agradual decrease in pressure which offsets the undesirable effects produced by the gases velocities. i

` As far as described; the invention applies 'particularly to a regenerator unit to whose chambers the gaseous fiows *are introducedin alin'ement' with their longitudinal center lines. In practice, however, the 'flowxintroduction is frequently at an' angle to these center lines. This 'also causes the aforemend tioned dificulties and may be remedied by 35 the invention. I The undesirable efects are here .dilninished by obstructions 8 to the gaseous fiows which function in substantially' the same Q mamer as the others. That is to say', they are in the form of steps which are placed to divert the gaseous flow from the points where they would naturally mpinge if introd'uced angularly at their' ordinary velocities. To

accomplish thisthey areplacedadjacent the i sidesflof the passageways which form anacute' 'angle' with the 'regenerator unit 1. A

V Preferably these obstructions 'are 'constructed to vanish into the sides of the gas passagewaysin which they are 'built, -leav-' ing a straight portion 8 of the original passageway closest to the unit. That is to say, the faces of these obstructions which oppose the gaseous flows have a triangular shape. The obstructions are arranged in the corners of the passageways which are farthest from the regenerator unit 1. Here they tend to divert the gaseous flows from the points in the chambers they would naturally seek if introduced angularly in the usual manner. This produces substantially the same, action, in a horizontal plane as the obstructions 7 do in a Vertical plane. I

The foregoing modificatons of the invention may of course be used individually or in combination with each other as the constructionof the particular regenerator unit requires. Also, the various proportions and shapes of all` the disclosed matter may be changedto accommodate Operating conditions encountered. I Although a specific form of this invention has been shown and described in accordance with the patent statutes, it is not intended to limit the scope thereof exactly thereto, except as defined by the following claims.

I claim: 1. The combination of a heat regenerating unit, chambers extending the lengths of the open sides of said unit and respectively constructed with' one or more steps opposing these. sides, and gaseous fluid passageways arranged parallel to said sides of said unit and communicating with one end of each of said chambers at diagonally opposite ends of the unit. 2. The combination of a heat regenerating unit, chambers eXtending the lengths of the open sides of said units, gaseous fluid passageways arranged parallel to said sides and communicating with one end of each of said chambers at an angle to the longitudinal aXis of said unit and at diagonally opposite ends thereof, and abrupt obstructions arranged adjacent said unit on the sides of said passageways forming acute angles with said chambers.

3. The eombination of a heat regeneratng unit, chambers extending the lengths of the open sides of said units, gaseous fluid passageways arranged parallel to said sides and passageways communicating with one end i of each of said chambers at diagonally opposite ends thereof, one or both of said passageways being arranged in a plane parallel to that of the' open sides of saidiunit at an angle to the longitudinal center line thereof and provided with an abrupt obstruction arranged on its side forming an acute angle with said center line and adjacent the unit.

In testimony whereof, I have hereunto set my hand.

VVILLIAM J. IRWIN.

communicating with one end of each of said i chambers at an angle to the longitudinal axis of said ,unit and at diagonally opposite ends thereof; and abrupt obstructions arranged on the sides of said passageways forming acute angles with said chambers, said obstructions being constructed to Vanish before reaching the portions of these sides which are closest said unit.

4. The combination of a heat regenerating unit, chambers extendng the lengths of the open' sides of said unit and respectively constructed With one or more steps opposing these sides, gaseous fluid passageways ar- 

